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import com.dkt.graphics.canvas.Canvas;
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import com.dkt.graphics.canvas.CanvasFrame;
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import com.dkt.graphics.exceptions.DomainException;
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import com.dkt.graphics.extras.GAxis;
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import com.dkt.graphics.extras.GFormula;
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import com.dkt.graphics.extras.formula.Calculable;
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public class Plotting {
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public static void main(String[] args) {
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//////////////////////////////////////////////////////////
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//The name that appears in the window
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String title = "Plotting sin(x)";
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//We need to create a new frame
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CanvasFrame frame = new CanvasFrame(title);
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//And make it visible
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frame.setVisible(true);
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//Set a size in pixels (whichever you want)
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frame.setSize(550/*width*/, 550/*height*/);
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//Extract a reference to the canvas from the frame
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Canvas canvas = frame.getCanvas();
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//Tell the canvas to center the origin of coordinates,
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//which by default is located in the upper left corner
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canvas.setCenterOrigin(true);
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//Tell the canvas to invert the Y axis, this way we will
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//consider all positive Y increments from the origin of
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//coordinates to the title bar
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canvas.setInvertYAxis(true);
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//////////////////////////////////////////////////////////
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Calculable calculable = new Calculable() {
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@Override
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public double f(double x) throws DomainException {
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return Math.sin(x);
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}
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};
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calculable.setScaleX(40);
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calculable.setScaleY(60);
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GFormula formula = new GFormula(calculable);
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// Paints should be set before calling the calculate methods
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// I use -π to π so the function is centered
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formula.calculatePath(-Math.PI, Math.PI, 0.01);
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canvas.add(formula);
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GAxis axis = new GAxis(-300, 300, -300, 300);
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axis.drawLinesH(true);
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axis.drawLinesV(true);
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canvas.addFixed(axis);
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//In order for the elements to be drawn in the canvas, is
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//necessary to call 'canvas.repaint()' after we add the
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//elements to it.
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//PS: There's an autorepaint feature (disabled by default).
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canvas.repaint();
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}
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}
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